FloatRect = object
  x*, y*, w*, h*: float

IntRect = object
  x*, y*, w*, h*: int

SomeRect = FloatRect | IntRect

func initFloatRect(x, y, w, h: SomeNumber): FloatRect {...}{.inline.}

func initIntRect(x, y, w, h: SomeNumber): IntRect {...}{.inline.}

func `==`[T: SomeRect](a, b: T): bool {...}{.inline.}